Faucet base



FIG. 1 is a perspective view of the new design for a faucet base;

FIG. 2 is a front view of the new design for a faucet base;

FIG. 3 is a back view of the new design for a faucet base;

FIG. 4 is a top view of the new design for a faucet base;

FIG. 5 is a bottom view of the new design for a faucet base; and,

FIG. 6 is a right side view of the new design for a faucet base, the left side view being a mirror image.

The broken lines in the Figures are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a faucet base, as shown and described. 